After Mel Gibson was busted for DUI last summer, Los Angeles County’s Office of Independent Review probed the Sheriff’s Office to see if it had broken any rules to make things easy for the Jew-bashing filmmaker.

Ex-federal prosecutor Michael Gennaco found no wrongdoing but could not explain why the case had two reports.

The first had only the bare facts and was released as a Baca spokesman claimed Gibson’s arrest went “without incident.”

The second included all the sordid details of his now legendary anti-Semitic and sexist outburst. It was kept secret until it was leaked to a Web site.

The white-glove service for Hilton, meanwhile, comes a year after her grandfather, William Barron Hilton, gave Baca a campaign contribution of $1,000 – the most allowed by law, according to Radar magazine’s Web site.

Since taking office in 1998, Baca has accepted more that $42,000 in gifts, including tickets to sporting events, The Los Angeles Times reported.

Baca also gave a close pal a cushy $105,000-a-year adviser job, the paper said. The sheriff recently came under fire after a Los Angeles resident wound up dead after being placed in the county jail for DUI.

Baca claimed Ramón Gavira hanged himself. His family said he was beaten to death. The department denied all charges but paid $750,000 this month to settle the family’s lawsuit.